【摘要】 应用网格法设置样地调查东莞大岭山林分凋落物的全N、全P和全K含量,利用地统计学并结合地理信息系统的空间分析功能,分析了凋落物养分空间分布特征,研究了凋落物养分的季节性变化.结果表明:全N、全P和全K的最佳拟合模型分别为球状模型、指数模型和高斯模型,其块金值与基台值之比分别为0.278、0.592和0.579,属于中等程度空间相关.更多还原

【Abstract】 A grid-system method was used to set up the plots to collect forest litters for the determination of total nitrogen,total phosphorus and total potassium.Spatial patterns of litter nutrients and their seasonal variations were investigated using geo-statistical techniques together with the GIS-based spatial analysis function.The results showed that the best fitted model for total nitrogen,total phosphorus,and total potassium was the spherical model,exponential model and Gaussian model,respectively,and their nugget effect was 0.278、0.592,and 0.579,respectively,showing medium spatial autocorrelation.更多还原